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19 Nov 2024 07:30:38 EST (-0500)
  garlic press WIP [33.4kb] (Message 1 to 2 of 2)  
From: marabou
Subject: garlic press WIP [33.4kb]
Date: 8 Jan 2002 15:31:59
Message: <3c3b5739@news.povray.org>
this one i found in a big swedish furniture house with yellow letters. it 
is probably a garlic press (of course i know how to use it, but i do not 
know if it is the right word). some little things have to be bettered 
(suggestions welcome). until the bolts are missing the object seems to be 
complete. rendertime without radiosity is 19s. with: 15min.
the surfaces make me a headache. first time ever i put the camera so close 
onto an object (location <0,0.6,-0.2> look_at <0,0.5,0>) and now the 
surface of the table and the wall are blurred (see red circles in minipic). 
the misterious is that the wall is three units away from camera and it has 
no normals or finishes, it is only flat. i can not explain the blur. the 
light source is a White*2 spotlight with area lights (four x four) and it 
is one unit away.
another question: the pigment color of the table is much brighter than the 
result if rendered with radiosity. said better: the table in the scene is 
brown, but the pigment color i set was beige (see spot on pic). how can i 
calculate in depency of light the resulting color if i use radiosity?
thanks in advance


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From: Christoph Hormann
Subject: Re: garlic press WIP [33.4kb]
Date: 9 Jan 2002 04:33:11
Message: <3C3C0E52.56AAA2C@gmx.de>
marabou wrote:
> 
> this one i found in a big swedish furniture house with yellow letters. it
> is probably a garlic press (of course i know how to use it, but i do not
> know if it is the right word). some little things have to be bettered
> (suggestions welcome). until the bolts are missing the object seems to be
> complete. rendertime without radiosity is 19s. with: 15min.
> the surfaces make me a headache. first time ever i put the camera so close
> onto an object (location <0,0.6,-0.2> look_at <0,0.5,0>) and now the
> surface of the table and the wall are blurred (see red circles in minipic).
> the misterious is that the wall is three units away from camera and it has
> no normals or finishes, it is only flat. i can not explain the blur. the
> light source is a White*2 spotlight with area lights (four x four) and it
> is one unit away.

I think some rounding of the corners would be good, otherwise using it
will be pretty dangerous.

> another question: the pigment color of the table is much brighter than the
> result if rendered with radiosity. said better: the table in the scene is
> brown, but the pigment color i set was beige (see spot on pic). how can i
> calculate in depency of light the resulting color if i use radiosity?
> thanks in advance

You can not say what color the surface will have, since this is exactly
what radiosity calculates, but the main influences are the light source(s)
and the colors of the surrounding objects.  If your table seems too dark,
increase diffuse finish or light source intensity or make the surrounding
(for example the ceiling) brighter.

Christoph

-- 
Christoph Hormann <chr### [at] gmxde>
IsoWood include, radiosity tutorial, TransSkin and other 
things on: http://www.schunter.etc.tu-bs.de/~chris/


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